Rotary engine or motor.



. ROTARY ENGINE 0H MOTOR.

' (Appncmon memmymlwol.)

r :sheets-sheet 1 nume PETERS 00,. PHdrO-LTTMO.. wnwrm'ron, D. c.

No. 708,879. Patented Se'p. 9, |902.

N. J. FRTUNESC & A. GEORGES. I

ROTARY ENGINE 0R MOTOR.

(Application -flfacl Nov. 7, 1901.)

(No Mode'l.)

"iii:

// A l J l l www UNITED STATES PATENT FEIOE.

NICOLAS JEAN EORTUNESOO -AND AEEEEDcEORcEs, OE LIEGE, BELGIUM, AssicNoRs oEwONE-THIRD rro JOSEPH GEORGES, OE LIEGE, BELGIUM.

ROTARY .At-:BNAGIN R" ivi o'roR.

SPIEGIFICATION forming partfof Letters Patent 1\l'o. 708,879, dated September 9, 1902.

Application ined November 7,1901. semi No. 81,297. (Nomadi-,1.)

"0 all whom tY 1n/ay conc-era.- 4

Be it known that'we, NICOLAS JEN FOR- TUNESCO, a subject ofthe King of-Rou mania, y and ALFRED GEORGEs,a subject of the King of Belgium, both residing at Liege, Belgium, have invented certain new anduseful Im';` provements in Rotary Engines or Motors; and" we do declare the following to be a full, clear, and exact description of the invention,such

Io as will enable others skilled in the art to which i it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters ot' reference marked thereon, which form a part of this specification.

This invention, which relates to eccentric rotary piston engines, contemplates the production of an improved engine of this character adapted to be used as a motor for furzo nishing power or as a pump for compressing uids, the object of the improvements being the simplification of rotary-engine structures and to obtain compactness and durability, coupled with high efficiency and economy in operation.` K

` Other advantages possessed by the invention are set forth in the following detailed description of the yconstruction and operation, in connection with'whicb attention is called 3o to the accompanying drawings, 'illustrating the engine in its preferred form.

In the drawings, Figure I is aside elevation of a rotary engine embodying the invention. Fig. 2 is avertical longitudinal sec-- tional View. Fig..3 is a vertical cross-sec'- tional view. Fig. L 4is a vertical longitudinal sectional View, the piston being omitted.

Referring to the drawings by letter, A denotes the cylinder, the yends or heads B B of 4o Awhich are removably bolted thereto,'suitable annular angespon the cylinder and heads being provided to receive the bolts. The shaft C is supported in bearings eccentrically disposed in said heads, and at each bearing is. a stuffing-box d, covered by a screw-cap e. The cylinder is provided with a foot f, by which it is secured to a suitable base or i'oundation. n

ct designates a concentric channel in the 5o cylinder-wall, which communicates directly with the induction-port g and with the interior of the cylinder through a passage a.

h is the eductiOn-port, Vwhich communicates with theinterior of the cylinder through a passage a2. The induction and eduction ports are arranged, preferably, one above the other ajt the same side of the. cylinder, and the passages OtV d2 are at opposite sides of the center of the cylinder.

Within the cylinder and fixed to' the shaft C is an eccentric piston I, of cylindrical form, which contacts at one point ofits' periphery with the inner wall of the cylinder. At the point of contact is a spring-pressed wearplatej, removably inserted in a recess in the 'cylinder-wall and serving to maintain vthe contact fluid-tight. The piston is provided with oppositely-disposed recesses i i, in which l are slidably mounted abuptments K K. Each abutment, of which-there are preferably two, is provided at itsen-ds with lateral anges kk and with inwardly-extending ears k lo', the flanges and ears ttin'g recesses t" t in -the piston ends. lisa bar carried by each abutment, the bar toward itsends being loosely held in openingst? inthe ears llc'.v The ends of the bar which project beyond the ears are reduced and serve as axles for rollers m,which travel in annular grooves b b, provided in the inner sides of the cylinder-heads, said grooves being concentricw'ith the cylinder, and therefore eccentric Jto the shaft and piston. In practice the abutments being guided by the groovesth rough the medium of the bars Zand rollers mI contact with the inner vwall of the cylinder throughout the revolution of the piston and shaft, the rollers reducing the friction to the minimum. Thus the abutments ing contact between the abutments and cylinder-wall, To further insure proper yielding contact bet-Ween the abutments and cylinderwall and obtain exact conformation` throughout the revolution of the piston, there IOO is provided at each abutment a bar o, which is movable in a recess 7a3-in the abutment and which contacts with the cylinder-wall, the contact being maintained by the action of coiled springs p p, occupying recesses in the abutment and pressing against the bar o. The bars o, which fit closely the recesses k3 to prevent the passage of the Huid, are guided in their outward movement by the walls of the recesses 7a3 and also by pins o o thereon, which enter corresponding openings in the abutment. As shown, the pistons are arranged at an angle to the radius of which the shaft O is the center. The angle or inclination of the pistons, which is increased in proportion to the increase in the size of the engine or motor, results in an increased area of piston -surface against which the steam or other f'luid acts with' a consequent increase of power as compared with an engine or motor the pistons of which are an ranged in a line which is the true radius. In addition by such inclination an increase of contact-surface of the piston Ais obtained, the curvature ofthe piston ends closelyapproximating the curvature of the cylinder-wall, the result being a perfect uidtight contact throughout a complete revolution. It will be observed also that the curvature ot' the outer or contact surface of the bars o also closely approximates the curvature of the cylinder-wall, thereby contributing toa duidtight contact, and that also the bars are guided in their movement in a line coincident with 'the line of movement of the pistons or at an angle to the radius.

In practice the compressed liuid, which may be steam, gas, compressed air, liquid air, Water under pressure, or the like, enters the port g and passing into the cylinder through the passage r1, ct' exerts force against the abutment which is past the opening a', driving the abutment, and consequently rotating the piston and shaft. In the rotation ofthe pistou the driven abutment is gradually extended by the bar Z and the opposite abutment is gradually retracted, this being positively accomplished, as above stated. As the driven abutment passes the opening a2 the compressed uid exhausts through said the engine may be utilized as a pump or coml presser.

The engine is very simple in construction and operation. The means employed to reduce friction renders the engine durable and enables its operation by the expenditure of comparatively little power with consequent economy. The yielding construction of abutment promotes easy running and insures a fluid-tight contact with the cylinder, whereby all of the power of the fluid is utilized. The engine is, moreover, very compact and occupies but little space, thereby adapting it for universal use.l The engine is also comparatively light of weight and runs steadily and without a {1y-wheel, thereby rendering it especially desirable for use in motor-vehicles. The engine may be produced at a comparatively low cost and is not liable to disorder.

We claim as our invention- In a rotary engine or motor, a cylinder having a concentric channel, an inductionport leading thereto, an opening leading from the channel to the interior of the cylinder, an ed uction-port leading from the interior of the cylinder, circular grooves in the cylinderheads concentric with the cylinder, a rotary piston-disk eccentric to the cylinder, pistons slidably mounted in the disk at an angle to the radius, rollers yieldingly carried by the pistons and traveling in the grooves, and yielding contact-bars carried by the pistons.

In testimony whereof We affix our signatures in presence of two witnesses.

NICOLAS JEAN FORTUNESCO. ALFRED GEORGES. Witnesses:

W. T. NORTON, F. L. BRowNE. 

